Preparation method of biological saline-alkali soil modifier for saline-alkali soil

Abstract

The invention relates to the technical field of modifiers, particularly to a preparation method of a biological saline-alkali soil modifier for saline-alkali soil. The preparation method comprises: preparing a mixing bacterial agent; preparing an organic regulator; preparing an additive; mixing the mixing bacterial agent, the organic regulator and the additive according to a weight ratio of 45-60:15-40:15-25, and uniformly stirring; and fermenting for 5-7 days at a temperature of 30-33 DEG C, and drying until the water content is less than 30% so as to obtain the biological saline-alkali soilmodifier. According to the present invention, a variety of strains are respectively subjected to amplification inoculation on a culture medium, and are cultured in an incubator to achieve a mature state, the obtained strains are inoculated into a culture liquid, shaking culture is performed, two-stage fermentation is performed in fermentation tanks, the bacteria obtained by the fermentation are adsorbed by carriers to obtain the mixing bacterial agent, the mixing bacterial agent, the organic regulator and the additive are mixing according to a certain weight ratio, and are uniformly stirred, fermentation is performed, and drying is performed to obtain the biological saline-alkali soil modifier; and after the biological saline-alkali soil modifier is applied, the growth indexes of crops canbe substantially improved, and the yield of crops can be increased.

Description

technical field [0001] The invention relates to the technical field of improvers, in particular to a preparation method of a biological saline-alkali soil improver for saline-alkali land. Background technique [0002] my country's saline-alkali soil has a large area and complex types. Due to the accumulation of a large amount of salt in the soil, a series of soil physical properties have deteriorated: sticky structure, poor ventilation, high bulk density, slow rise in soil temperature, and poor activity of aerobic microorganisms in the soil. The release is slow, the permeability coefficient is low, and the capillary action is strong, which leads to the aggravation of surface soil salinization. [0003] With the continuous development of coastal beaches, many difficulties have been encountered in the improvement and utilization of saline-alkali land. In order to make full use of coastal tidal land, people have adopted various methods such as ditches to reduce water and drain ...

AI Technical Summary

Problems solved by technology

However, due to the compaction and barrenness of the saline-alkali soil, low fertility and high soil pH, it is not conducive to plant growth

[0004] Soil improver plays an important role in the improvement of saline-alkali land, and microbial bacterial agent is also a development direction, but the existing soil improver has the following defects: (1) the microorganisms in the improver are easily inactivated during transportation and storage and cannot (2) The ability to improve saline-alkali land is limited, and the soil pH and alkalization degree cannot be reduced at the same time; (3) The ability to increase the organic matter content in the soil is insufficient; (4) The improvement effect on soil water-holding pores is not good; (5) ) The number of microorganisms in the improved soil is less

[0005] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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